biehlza

Best answer as chosen by Asker / Ratings
Since you didn't list what coins you found, I'll help you out and just list all of them.
1. There should be a red coin in the tree by where you first enter
2. Slide down the path outside and right before you stop, there should be one against the wall
3.Cross the bridge where the two snowmen jump,but don't go down yet. There should be a broken bride with a red coin waiting to be found right near there.
4.At the bottom of the level, where the mother penguin is, there should be a red coin in a tree fairly close to her.
5. Around the bottom, on the right of the mother penguin, right across the dead end bridge there should also be a coin
6. Also at the bottom of the level, farther to the right, there should be a red coin near the cliff, so be careful
7.Go back to the broken bridge at the bottom and stand fairly near the end, and within seconds, you'll be teleported back near the beginning. Near where you warped too, if you look down with c, you should see a yellow box and an ice wall. Slide down the cliff, yes the actual cliff so you will land in the box. Located right by it should be a red coin.
8.The last coin is found near the bottom portion of the level. Back where the mother penguin is, there should be an elevator to her left. Go on that and ride to the top to get the last coin.

I hope this is helpful.